Uln2003 Stepper Motor Driver Circuit Arduino

The wiring diagram schematic below shows you how to connect the uln2003 driver board to the 28byj 48 stepper motor and the arduino.

Uln2003 stepper motor driver circuit arduino.

Dc motors or stepper motors with microcontrollers like arduino pic microcontroller or 8051 microcontroller etc. 5 6 or 8 wire stepper motor i e. Usually the 28byj 48 stepper motor comes with a 5 pin connector that will fit to the uln2003 driver board. 28byj 48 28byj 48 unipolar stepper motor.

It has good torque for its size but has relatively slow motion. So you will need some sort of a driver to safely control the stepper motor. The 28ybj 48 stepper motor operates on 5vdc and has built in reduction gears. We have used the 28byj 48 stepper motor and the uln2003 driver module.

The connections are also given in the table below. Connect the uln2003 driver ln1 ln2 ln3 ln4 to the arduino digital pins 8 9 10 and 11 respectively. Uln2003 stepper motor driver. Arduino uln2003a based stepper driver board.

There are numerous ways to create a driver starting with a simple transistor for each of the coils. Connecting the 28byj 48 stepper motor to the uln2003 driver board. Uln2003a can also be used to drive different motors e g. The circuit diagram for the arduino stepper motor control project is shown above.

Some of the other applications of uln2003 include logic buffers lamp drivers line drivers led display motor driver circuits etc. Note that it is possible to directly power the stepper motor from the arduino. Arduino stepper motor control circuit diagram and explanation. Wiring connecting 28byj 48 stepper motor and uln2003 driver board to arduino uno.

Connecting the uln2003 driver board to the arduino. Start by connecting the power supply up to the uln2003 driver. Stepper motor 5v 4 phase 5 wire uln2003 driver board for arduino from geeetech wiki contents 1 stepper introduction 2 features 3 stepper motor 28byj 48 parameters 4 interfacing circuits 5 example code 5 1 code 5 2 stepper library 6 document 7 reference materials 8 how to buy stepper introduction. The bipolar stepper motor usually has four wires coming out of it.

Unlike unipolar steppers bipolar steppers have no common center connection. Now that we know everything about the motor we can begin hooking it up to our arduino. The 28byj 48 stepper motor can draw up to 240 ma considerably more than what an arduino can deliver through any of its ports. They have two independent sets of coils instead.